baber/WOPTO huggingface dataset:
Patent GB-1494381-A (GB)
Title: Naphtholactam derivatives
IPC: C07D209/92
Filed: 1975-04-10
Abstract: Naphtholactam derivatives of the formula I <IMAGE> in which Hal denotes chlorine or bromine and X denotes hydrogen or chlorine, are prepared by reacting compounds of the formula II <IMAGE> with bases and then with acids, R<1> denoting a radical of the formula  -SO2-R<2> or <IMAGE> in which R<2> and R<3> represent alkyl, cycloalkyl, phenylalkyl or optionally substituted phenyl. The corresponding N-substituted derivatives can be prepared by treatment with the agents introducing the radical R. The optionally N-substituted compounds of the formula I are useful starting products, e.g. for the preparation of dyestuffs and optical brighteners.
Patent GB-828367-A (GB)
Title: Improvements in the production of polymers and copolymers of isobutylene
IPC: C08F10/00
Filed: 1957-05-09
Abstract: Isobutylene polymers or copolymers, with for example, butadiene, isoprene, dimethyl butadiene, chlorbutadiene, styrene, a -methyl styrene a -chlorostyrene, acrylonitrile and divinyl benzene, are prepared by polymerization in an indifferent organic solvent at below 0 DEG  C. with a Friedel-Crafts catalyst, a co-catalyst and chain-breaking compounds in the presence of (a) phenol sulphide or (b) phenol sulphides and phenols as polymerization accelerators.  The process may be continuous, in solution in a saturated or halogenated hydrocarbon, e.g. methyl chloride, or liquid ethylene.  The cocatalysts are aliphatic, cycloaliphatic or aromatic alcohols or ethers, and the chain-breaking compounds are olefines such as n-butylenes, di- or tri-isobutylene, di-olefines such as butadiene, isoprene, styrene hydrogen halides, mercaptans and alkyl halides. Suitable phenols are phenol, cresols or di (t-butyl) p-cresol with sulphides such as di(t-butyl phenol), di-(t-amyl phenol), and di(octyl-phenol) sulphides.  Polymers of low molecular weight from 5000 may be prepared and the copolymers of isobutylene and styrene are thermoplastic and may be used as self-supporting foils or as coatings for paper, cardboard, fabrics and leather.
Patent GB-1189791-A (GB)
Title: Improvements relating to Electrical Connectors.
Inventor: PARISH RAYMOND WILLIAM
IPC: H01R13/20
Filed: 1968-03-27
Abstract: 1,189,791. Two-part couplings. BRITISH AIRCRAFT CORP. Ltd. 13 March, 1969 [27 March, 1968], No. 14794/68. Heading H2E. An electrical two-part coupling comprises sockets 1a 2a interconnected by a further socket 3a of smaller diameter which receives a probe to test for electrical continuity. The sockets may be brazed or welded together or formed from a single strip of resilient phosphor bronze (Fig. 1, not shown). The sockets are mounted in a plastics body, and a series of sockets may be interconnected by a busbar. Sockets la, 2a have flaps 4a-7a which snap behind collars on the free ends of contacts inserted into sockets 1a, 2a. Socket 3a may contain a resilient insert which wedges the test probe for a better contact. The lower end of the socket may have a sleeve to which a lead is crimped or brazed. The insulating block has on one face resilient material which has apertures or which can be punctured to allow insertion of the contacts and the test probe into the sockets.
Patent GB-438374-A (GB)
Title: Improvements relating to direct current electric motor equipments operated in connection with rotary direct current transformers
IPC: H02K47/16
Filed: 1934-05-16
Abstract: 438,374. Rotary transformers. PRITT, S. E., Riverdale, Hathersage, near Sheffield, GRAY, W. T., Darroch, The Close, Altrincham, Cheshire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. May 16, 1934, No. 14841. [Class 35] [See also Group XXXVII] In a system in which motors are supplied from a metadyne transformer 1, Fig. 1, switching means 8, 9, are provided whereby the connections of a variator winding 2, or the field 4 of an exciter 3 supplying a variator winding, to the brushes of the transformer can be changed at suitable points during the motoring or regenerative operation, so that a rising, falling, or constant voltage may be supplied to the variator winding. For acceleration the switch 9 is closed so that at first a rising voltage is applied to the variator winding from the brushes c, d, and, when the, voltage between the brushes b, d, is zero switch 9 is opened, and switch 8 closed, so that a falling voltage from brushes c, b, is then applied, similar switching operations being effected during regenerative deceleration. By including a resistance in the connection to the brush d the switching change may be made even though a voltage difference exists between the brushes band d. In a modification, Fig. 2, the brushes b, d, are connected by a resistance 10 through switches 13, 14, the exciter field winding 4 being connected to an intermediate point 11 of this resistance through an additional resistance 12 which may be short-circuited. In a further modification Fig. 3 (not shown), the brush d is permanently connected to the exciter field winding through a resistance, and direct connection is made to the brush b by means of a switch. The changes of connections may be made manually or by means of relays operating when the motor voltage attains a desired amount. In place of switches, rectifiers may be connected between the brushes b, d, and the exciter field so that the effective connections are automatically transferred. Specification 400,416, [Group XXXVII], is referred to.
Patent GB-257681-A (GB)
Title: Improvements in method and means for spacing cores on the shafts of slitting, winding and like machines
IPC: B26D3/16
Filed: 1925-06-08
Abstract: 257,681. Marks, E. C. R., (Cameron Machine Co.). Jan. 8, 1925. Winding webs.-In a method of spacing cores on a winding shaft, a long core member is secured on the shaft, and is then subdivided into a group of individual cores which are held undisturbed on the shaft. The core member 6 on the winding shaft 1 may be subdivided in a core-cutting machine. Fig. 1, in which the disc cutters 11 are spaced in accordance with the cutters of the slitting-machine, or the core may be subdivided in the slitting-machine. The core is held on the winding shaft 1, Fig. 5, by a member 3 with a serrated edge 7 which is moved axially by screw means and protruded by slots 4 and pins 5. In a modification, a rotatable spiked rod is substituted for the sliding member 3. Specification 24037/14 is referred to.
Patent GB-771078-A (GB)
Title: A new or improved fireplace surround
IPC: F24B1/198
Filed: 1954-05-21
Abstract: 771,078. Metal frames for fireplaces. HANKE, W., and DAINTY, W. A. R. May 23, 1955 [May 21, 1954], No. 14932/54. Class 126. A metal frame for a fireplace opening comprises channel section uprights 11, 12 and a cross-piece 13, reinforced by L- shaped corner backing pieces 15 and straight backing pieces 17 at the bottom of the uprights. Intermediate backing pieces 20 may be provided. Angle section strips 23 are bolted to the backing pieces with one flange projecting rearwardly round the fireplace opening, and brackets 27 are also bolted to the intermediate backing pieces to provide lugs for embedding in the concrete or other material of the fireplace. The flanges of the outer frame' members are bent inwardly. to secure the backing pieces.
Patent GB-1459321-A (GB)
Title: Manufacture of crystals by the verneuil process
IPC: C30B11/10
Filed: 1974-04-04
Abstract: 1459321 Verneiul crystal growing SIEMENS AG 4 April 1974 [16 May 1973] 14932/74 Heading BIS  Crystals are manufactured by the Verneiul process by producing a melt at the upper end of a seed crystal by the application of a flame thereto, gradually retracting the crystal from the flame so that material crystallises from the melt onto the crystal at the solidliquid interface, and simultaneously feeding material to form the crystal in powder form from an outlet at the lower end of a reservoir for the crystal powder to the upper surface of the melt, the flame being produced by the interaction of reactive gases directed down towards the melt from the tip of the burner, wherein the powder leaving the reservoir outlet passes down through a vertical passage in the burner to the tip thereof, and wherein one stream of gas is fed through the reservoir outlet and the other stream is fed by a route outside the reservoir in such a manner that when the two streams meet the resultant gas stream has substantially no velocity components in directions perpendicular to the axis of the flow passage whereby no vacuum is produced in the lower part of the reservoir. As shown in Fig. 1 suitable apparatus comprises a powder reservoir 1 containing a screen like partition 4 to support the powdered material 3 required to form the crystal, a gas supply pipe 8 and coaxially with the reservoir a flow passage 9 for a further stream of this first gas passing through the pipe 8. Both gas streams unite near the outlet 6 for the powder from the reservoir and are led down to the burner 12 which is provided with a passage 11 carrying the second gas which reacts with the first gas to form a flame (e.g. oxy-hydrogen). In order to supply the powder 3 continuously the reservoir is vibrated by mechanism 20.
Patent GB-865741-A (GB)
Title: Aluminium and aluminium-base alloy degassing process and composition
IPC: C22B21/06
Filed: 1959-05-01
Abstract: Molten aluminium and aluminium-base alloys are degassed by passing a gaseous mixture of chlorine and carbon monoxide through the melt. The Cl/CO ratio of the mixture is preferably between 2 : 1 and 1 : 4 by volume and a diluent, e.g. nitrogen or air, may be included.  The carbon monoxide may be formed within the melt p  by feeding a gaseous mixture of chlorine and carbon dioxide in through a graphite tube. Alloys having the following percentage compositions are referred to :-  <TABS:0865741/II/1>
Patent GB-972113-A (GB)
Title: Tape drive in magnetic tape recorder
Inventor: SHIRAI TADAO
IPC: G11B15/44
Filed: 1963-04-17
Abstract: 972,113. Driving record tapes. AKAI ELECTRIC CO. Ltd. April 17,1963, No. 14998/63. Heading G5R. A two-speed tape-recording machine comprises a tape drive shaft adapted to be rotated at a constant speed, a sleeve mounted on the shaft and axially slidable along it between an operative position for engagement with the tape and an inoperative position where the tape is engaged by the shaft, a pivoted lever adapted to slide the sleeve between its two positions, and press button means to operate the pivoted lever. In Fig. 1 a sleeve 14 is axially slidable on a drive shaft 5 and is rotated by the shaft through grub screw 15 which engages a longitudinal groove 16 in the shaft. The sleeve is provided with a peripheral groove which is engaged by pegs projecting from the limbs of a fork 20 forming the end of a lever 17 pivoted at 18 to a fixed member 19. Two push buttons 23, 24 are pivoted to lever 17 on either side of pivot 18 and a ball catch (not shown in Fig. 1) attached to fixed member 19 is adapted to engage one of two apertures in lever 17 to locate the lever in one of its two desired positions. In the position shown in Fig. 1 the tape 11 is adapted to be driven at one speed by the end 5a of the drive shaft. If button 24 is pushed the lever 17 moves the sleeve 14 up to a position where it can drive the tape at a second faster speed. In a modified arrangement, Fig. 5, a snap spring 34 extending between one end of the lever and a fixed member 35 is provided for displacing the sleeve 14b. A spring ring 15b is provided on the sleeve and has an inwardly projecting end 15c which engages groove 16b to constrain the sleeve to rotate with the shaft. A shallow recess at each end of groove 16b provides locating means for the end 15c of the spring ring. Push button 24b is pivoted to the lever and carries a lateral extension 24d provided with a ball catch 38 which engages aperture 36 or 37 in fixed member 35 to locate the lever in one of its two positions. Push button 236 is not pivoted to the lever but has a horizontal extension carrying a pressure pin which engages the side of the lever.
Patent GB-162946-A (GB)
Title: Improvements in windows
IPC: E06B3/50
Filed: 1920-06-02
Abstract: 162,946. Crittall Manufacturing Co., Ltd., (Crittall Casement Window Co.). June 2, 1920. Pivoted-sliding windows. - In a window having two or more sashes, each sash is hinged to a transverse bar 18 at its upper edge, the bars having down-turned ends sliding in channel linings in the frame, and the sashes are connected to the frame by links 23 pivoted to blocks fixed to the frame, and to the sashes. The sashes may be opened outwardly and reversed for cleaning. The meeting edges of the sides and bottom of sashes and frame are shaped and bevelled as shown in Fig. 3. The top or hinged edges are shaped as shown in Fig. 4. The outer members of the channel forming the sash are cut away to provide sufficient clearance for the angular members of the bar 18 when the sash is turned on its hinges. The hinge member of the lower sash serves to lock the upper sash when closed as shown in Fig. 4. Springs 20 secured to the ends of the bar frictionally engage the lining and hold the sash in any position; additional adjusting-screws 22 are provided for the springs.
Patent GB-336555-A (GB)
Title: Improvements relating to devices for automatically sorting articles
IPC: B07C5/342
Filed: 1929-05-14
Abstract: 336,555. British Thomson-Houston Co., Ltd., and Fitzgerald, A. S. May 14, 1029. Separating by electrical apparatus controlled by selenium and like cells.-In apparatus for sorting articles in accordance with their colour values of the kind in which the articles are exposed to light, the reflection of which is caused to fall on a photo-electric cell associated with a device responsive to the changes of current in the circuit including the photo-electric cell for selectively moving the articles, the output of the cell is amplified by a grid-controlled arc discharge device such as is described in Specification 223,921, [Class 40 (v), Wireless signalling &c.]. In the embodiment described the articles, such as beans, are delivered in small quantities from a hopper 6 on to a rotating disc 2 and into a tapering channel formed by two curved strips 8, 9 so that they are arranged in line and passed at intervals through a spot, of light 15 cast by a lamp. The reflected light falls on photo-electric cells 16 in circuit with the amplifying device 24 and an electromagnet 19 adapted to actuate a spring- controlled push bar 21 or release an air-jet to move articles not conforming to a required standard from their normal path to a bin 14 into a path leading to another bin 13. Preferably the device is adjusted so that the articles moved belong ta the class having the smaller number. The electromagnet. 19 is in the output circuit of the amplifier 24 which is a gas filled arc-discharge device energized by a source 25 of alternating current. The discharge takes place only when the plate 28 is positive, and the point in the cycle at which the discharge begins is controlled by the voltage on the grid 27 connected to the anode of the cells 16. The voltage across the cells is derived from a tapping on the shunt resistance 33 through the auto-transformer 30. The grid is also initially biassed by connection through the resistance 35 to a tap on another shunt resistance 34. The operating-voltage on the grid is adjusted, for setting the apparatus, by varying the positions of the taps 33. 34.
Patent GB-313292-A (GB)
Title: Improvements in and relating to metallic vapour lamps and gaseous discharge devices
IPC: H01J61/28
Filed: 1928-05-23
Abstract: 313,292. Freedman, P. May 23, 1928. Vacuum tubes; low-pressure metallic-vapour apparatus.-Metal-vapour or gas discharge devices, such as rectifiers, oscillators, and sources of visible and ultra-violet radiation, are so constructed that domestic supply voltages produce first a glow discharge which alters to an arc discharge consequent upon evolution of metal vapour or liberation of one or more permanent gases from sources within the device, the vapour or gases returning to the sources when the device is cold. Charcoal, meerschaum, powdered glass, thoria, silica gel, or palladium black may be used to absorb and liberate the gases, which may consist of argon, neon, helium &c. Caesium and like vapours also may be present. Fig. 1 shows a lamp adapted to be started by heating a mercury pool 9 by means of a resistance 10, the vaporization causing ionization of the gas and a glow discharge to form between the mercury and an anode 7, further vaporization causing the arc discharge to be set up. In the A.C. lamp shown in Fig. 2, a glow discharge occurs immediately between the electrodes 18, 19 and its action on the mercury pool 21 is supplemented by that of an external heater 22. In starting the lamp shown in Fig. 3 a glow discharge is first produced between an auxiliary electrode 27 and the mercury pool 28, and this discharge spreads to the anode 23 and later heats a porous block 24 above the anode and liberates gas therefrom to cause the discharge to change to an arc. A similar lamp is described (Fig. 5, not shown) wherein the porous block 24 is replaced by a filament of porous carbon or palladium through which current is passed to liberate gas. Fig. 4 shows a D.C. lamp having a cathode 33 and an anode 34 and containing a receptacle 35 with a porous filling adapted to be heated by a resistance 37 to liberate gas. This arrangement may be replaced by a porous block of thoria &c. in which the resistance is embedded.
Patent GB-151199-A (GB)
Abstract: 151,199. Imray, O., (Bosch Akt.-Ges., R.). Jan. 29, 1920. Centrifugal governors.-A centrifugally-actuated contact device for short circuiting electric ignition apparatus such as rotary interrupters at a determined speed of revolution comprises a flyweight c attached to a rod i mounted in a cupshaped casing a so that it is free to slide at right angles to the axis of rotation of the cup, which is fastened by a screw b to the rotary interrupter. A spring f, the pressure of which can be varied by a nut e, controls the sliding movement of the weight c. The weight carries a platinum contact m and is in electrical connexion through a flexible copper strip p with the casing a. The co-operating contact n is carried on a support o attached to but insulated from the casing a and in electrical connection through a pin s and socket r with the rotary interrupter.
Patent GB-637996-A (GB)
Title: Improvements in and relating to the generation of electric oscillations
IPC: H03J7/16
Filed: 1946-05-20
Abstract: 637,996. Automatic control systems. GENERAL ELECTRIC CO., Ltd., and ESPLEY, D. C. May 20, 1946, No. 15219. [Class 38 (iv)] [Also in Group XXXIX] In a signal receiver for receiving a sideband without its carrier, e.g. for multi-channel carrier telephone transmission systems, the frequency of a local oscillator used to demodulate the sideband is brought into agreement with the suppressed carrier frequency by means of a rotating device whose speed is controlled in dependence on the frequency of a demodulated reference oscillation in the sideband. The locally generated oscillation, e.g. from a crystal controlled generator, is applied at 10 through a phase splitting and amplifying circuit to windings 17, 18 which produce' a rotating field in which a pick-up coil 19 rotates. The output 20, 21 from this coil is used to demodulate the incoming signal and is maintained correct by the reference frequency and a frequency discriminator. The reference oscillation, for instance, about 500 cycles per second, is fed to a pair of frequency discriminating circuits 26, 27 tuned to frequencies above and below the correct value. If the received reference frequency is incorrect, one or other of opposing windings 34, 35 of a D.C. motor 36 is energized to cause rotation in one direction or the other. This rotation controls the speed of the motor 46 driving the pick-up coil 19 by means of a rheostat 44. In a modification, the rotating electromagnetic field produced by coils 17, 18 may be replaced by a electrostatic field produced by charged plates, the pick-up member also being composed of plates.
Patent GB-499122-A (GB)
Title: Improvements in or relating to burners more particularly for industrial furnaces
IPC: F23D14/60
Filed: 1938-05-23
Abstract: 499,122. Gas burners. DORTMUND HOERDER HUTTON-VEREIN AKT.-GES. May 23, 1938, No. 15289. Convention date, June 10, 1937. [Class 75 (i)] In a gas burner, more particularly for furnaces, air and gas, supplied respectively through inlets 4, 5 on the same side of the casing 1, are regulated simultaneously by valve pistons 6, 7, interconnected by a part 9 of reduced diameter and operated by a hand-wheel 8. The air passes from the inlet 4 through slots 10 in the part 9 into the hollow interior 11 containing a piston 13 operated by a hand wheel 12, for opening and closing the slots 10 to vary the air supply independently of the gas supply.
Patent GB-143070-A (GB)
Title: Briquetting press
IPC: B30B11/18
Filed: 1919-06-18
Abstract: 143,070. Ekberg, H. J. June 18, 1919. Rolling-machines.-Relates to presses of the type in which material is compressed between plain or indented rolls 1, 2 into a bar 4 of briquettes, and consisting in the provision of a pair of loose rings 5 surrounding and disposed eccentrically with respect to the roll 2, so as to form a lateral closure to the moulding-space and also to serve to release the bar 4 from the rolls. The rings 5 are supported bv rollers 7, 8, and at one side are sustained laterally by flanges 6 on the roller 2, whilst at the opposite side they are separated by a roller 9 to free the bar 4, which is severed into briquettes by impinging against a shield 12.
Patent GB-214496-A (GB)
Title: Improvements in or relating to delivering measured quantities by volume applicable to receptacles and the like
IPC: G01F11/26
Filed: 1923-06-13
Abstract: 214,496. Weir, A. P. June 13, 1923. Moving chamber apparatus.-A cover a having an orifice e is fitted on the inside with a hopper d provided with radial openings f, the hopper being secured to the cover around the orifice e, and also secured to and surrounded bv a funnel h. In a modification the hopper has the head part of the cone uppermost and the cover is provided with many orifices for spriukling. The hopper may be closed at the bottom by an adjustable screw cap g for varying the capacity. In a third form, a bell-shaped hopper is secured to the cover around the central orifice and a bowl mounted beneath the hopper is secured to the cover by brackets. In use, the cover either forms the cover of the container or may be substituted for it and the vessel inverted. On again placing the vessel upright and inverting it a second time, a measured quantity of the contents is delivered.
Patent GB-1291439-A (GB)
Title: Improvements in electron beam welding apparatus
Inventor: GINGS BRIAN CRANE SCO
IPC: H01J37/30
Filed: 1969-03-24
Abstract: 1291439 Welding by fusion UNITED KINGDOM ATOMIC ENERGY AUTHORITY 8 April 1970 [24 March 1969] 15408/69 Heading B3R [Also in Division H1] Electron beam welding apparatus includes a target on which the beam is parked between operations, at a lower power than welding power. The target, which can be adjacent a welding station, may be of a refractory metal such as tungsten or niobium. Means are provided for deflecting the beam on to the target after welding, and means are provided for decreasing the beam power from 450 watts used for welding to 75 watts during parking. The beam is brought up to full power on the target before being deflected back to the welding station.